Radiator structure



Nov. 26, 1929. c. J. BocK RADIATOR STRUCTURE Filed Feb. 20, 1928 Patented Nov. 26, 1929 UNITED STATES A'rsr FFTHQ f CARL J. BOOK, OF PONTIAC, MICHIGAN, ASSIGNOR TO YELLOW TRUCK & COACH MANU- FACTURING COMPANY, OF PONTIAC, MICHIGAN, A CORPORATION OF MAINE RADIATOR STRUCTURE Application filed February 20, 1928. Serial No. 255,695.

This invention relates to motor vehicles, and more particularly to the construction of a radiator for the water cooling system of an internal combustion engine.

While not limited in its use, it may be said that the present invention is particularly adaptable for use on commercial automobiles, trucks, busses and other heavy duty vehicles, such as are usually subjected to extremely hard usage andeven abuse. It

pansion of the heat radiating unit and shell.

It will be apparent, therefore, that since the weight of the shell and heat radiating unit are each supported independently of the other, and their relative expansion is un confined, there will be a consequent freedom from strain, whereby damage and breakage of parts is reduced, and the life or period of usefulness of the radiator structure materially increased.

A preferred but not necessarily the only embodiment of the invention is illustrated in the accompanying drawing, wherein Fig.

in section, as indicated by the section lines 2-2 of Fig. 1; Fig. 3 is an enlarged detail sectional View of the central, top portion of the'radiator, and Fig. 4: is a fragmentary view, taken on line H of Fig. 3.

Referring more particularly to the drawing, the reference character 1 indicates the outline of the front portion of an internal combustion engine, to "which is secured an L-shaped bracket 2 having a forwardly extending portion, projecting centrally beneath the radiator structure, and carrying a transversely extending spring leaf or plate 3. It is upon the spring plate 3 that the radiator structure is more or less flexibly supported, the flexibility of the plate serving to cushion road shocks and relieve the radiator structure of strains incident to frame weaving, engine vibration and the like.

That part of the radiator through which the water or other cooling fluid circulates 1 and which for convenience, may be termed the heat radiating unit, comprises an upper tank or inlet header 4, and a lower tank or outlet header 5, with an intermediate core' assembly 6, by means of which the cooling fluid dissipates its heat as it passes from the upper to the lower tank. Following general practice, a shell or casing is provided to lend r a certain ornamental appearance to the structure.

The shell or casing 1n this instance, 18 of cast metal, preferably aluminum, aluminum alloy, or other light weight metal, and which the underside, for the reception of long bolts 11, which extend upwardly through aligned apertures in the ends of the spring plate 3,

bottom wall of the casing portion 7 and into screw threaded engagement with the threads in the bosses 10. Coil springs 12 are interposed between the heads of the bolts and the underside of the spring plate, to yieldingly maintain the radiator structure on the spring supporting plate. It will thus be seen that the radiator structure is more or less flexibly mounted on the front of the engines and independent of the chassis frame, whereby the flexibility of the mounting cushions or absorbs enginevibrations, road shocks and the like, and atv the same time the radiator structure is relieved of the racking strains incident to frame weaving.

The central top wall of the casing section spring plate 17, having a semi-circular open 'mg in one edge, fitting about the filler spout 15 and secured to the top-tank by the rivets 16. Bolts 18 having nuts 18 threaded thereon, secure the opposite end of the flexible plate 17 to the hoodledge 19 of the radiator shell or casing, these bolts also serving to .fasten a stationary plate 20, extendingrearavardlytotheco'wl or dashboard to brace the radiator structure, and which also forms a,

part ofthe enginehood or bonnet, and to which the other parts in the engine hood are hiugedly secured. The closure cap 21 has a. :downturned peripheral flange 22 extending beyondthe circular flange 13 of the casing orshell, and also has aidependent annular wall 23, for screw-threaded engagement with the interior of the filler spout 15. If desired, the. cap may be provided With a temperature I indicator 24, extending through an opening in the capv and having threaded thereon a part 25 carrying a dependent stem 26, proecting through an opening 1n across Web 27 integralwith the fillerspout, and having 7 an enlarged head 28 at itslower end to prevent complete removal and accidental loss of the closure cap. 7 V V Since the opening in the casing is of larger diameter than that of the filler spout, and because of the fact that the dependent flange 22 extcndsbeyond the flange 13,, ample clear- I ance is provided between these parts forthe unobstructed relative vertical. movementfof the heat radiating unit and casing upon relative expansion or contraction, at which time also the tie plate 17 Will flex or bend to accommodate and permit such unrestrained movement. It Will thus beseen that the Weight of the heat radiating unit and shell are each supported independently of the;

other, there being a definite fixed relation only at their lower ends, and that the upper ends are so connected as to prevent undesirable relative fore and aft and sidewise move- 1nent,while freely permitting a slight relative vertical movement, whereby expansion oiboth the shell and heat radiating unit is unconfined and the relative expansion between these parts will not impose strains on the other.

'. v Iclaim:

1. Means to rigidly maintain a radiatorin definite centered relation within its shell and permit relative vertical movement-between the radiator and shell, including in combination With a radiator shell and a radiator therein having a. filler spout projecting through an opening in the shell of greater diameter than the spout to permit movement therein of the spout, of a flat spring plate flexible only at right angles to its plane and having in one end thereof a substantially semi-circular recessed portion closely fitting the wall of the spout, means to connectthe recessed end of the plate to said radiator and a rigid connection between the opposite end of the plate and said shell. V H v 2; Means to rigidly maintain a radiator in definite centered relation Within'its shell and permit relative vertical movement between'the radiator and shell, including in combination with a radiator shell and a radiator therein having a filler spout projecting' throughan opening in the'shell of greater diameterthanthe spout to permit movement therein of the spout, of adiatspring plate flexibleonly at right angles to its plane and having ajrecessed'end that conforms s'ubstantially to the contour of the hllerspout wall,

means to rigidly connect saidrecessed end to the radiator in close fitting relation with the tiller spout anda rigid connectionbetween the other end of the plate andthe shell;

in definite centered relation withiirits shell and permit relative vertical movement. be-

tween the radiator and shell, including vincomb nation with a radiator anda shell, 0011-;-

nected together adjacenttheir lower ends, of a flatspring plate which is flexible only in;a

. 1 9 3. ,Means to rigldlyvmaintaln a rad ator direction at rightangle's to its plane, means 7 to rigidly connect said plate at opposite ends to the upper portions oi theradiator and the;

'sh el1,'with theplate extending in a'substantially horizontal plane,

4i Ina radiator construction, a support,,a

radiatorshell,aradiator; unit enclosed Within the shell and having a dependent rigid projec -e tion adj acent the bottomthereof that extends loosely through a lower part of the shell and said support, a spring bearing on said projection to "resiliently hold down the radiator unit and shell on said support, and a'hor-izontallydisposed spring plate which is flexible only in a direction at right angles towits horizontal plane, rigidly connected at opvposite ends to upper portions of the radiator unit and shell, whereby the shell and unit are firmly held against lateralmovement and are movable freely relative to each other in a vertical direction. Y

, 5. In combination with; a radiator 'shell having a flanged opening therein and aradiator unit encased Within the shell and carrying a filler spout that projects loosely through said flanged opcning,ofa spring blade that is flexible onlyin adir ectionat rightangles to its plane, having its opposite ends rigidlyconnected with the shell and radiator. and lying in a plane at right angles to the spout, to rigidly holdthe radiator and shell against relative lateral movement While permitting,

through the bending tl ereof, of .relative movement of the radiator and shell in a direction at right angles to its plane.

6. The structure of claim 16 wherein the filler spout has a closure cap that overhangs the top of the flange of the shell opening and the overhanging portion thereof is provided With a space into Which the flange may project.

In testimony whereof I aifix my signature.

C. J. BOOK. 

